Apparatus for controlling railway-wagons in loading or unloading.



No. 704,354. Patented My 8;, I902.

J, D. MILLER 81. R. YATES. APPARATUS FOR CONTROLLING RAILWAY WAGONS INLOADING 0R UNLOADING.

Application filed Apr. 22, I902,

(No Model.)

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UNITED STATES PATENT OFFICE.

JOHN DAVIE MILLER AND ROBERT YATES, OF COATBRIDGE, SCOTLAND.-

APPARATUS FOR CONTROLLING RAILWAY-WAGONS lN LOADING 0R lJNLOADING.

SPECIFICATION formingpart of Letters Patent No. 704,354, dated July 8,1902.

A li ati filed April 22, 1902. Serial No. 104,206. (No model.)

To (all whom it 77201 concern:

Be it known that we, JOHN DAVIE MILL R and ROBERT YATES, subjects of theKing of the United Kingdom of Great Britain and Ireland, residing atShawhead, Goatbridge, county of Lanark, Scotland, have invented certainnew and useful Apparatus for Controlling Railway-Wagons in Loading orUnloading, (for which application for patent has been made in GreatBritain, No. 22,692, dated November 11, 1901,) of which the following isa specification.

The object of this invention is to provide apparatus for controlling themovements of wagons upon railway inclines at railway-stations,goods-yards, shipping-docks, collieryscreens andthe like and forcontrolling colliery-tubs or other rolling-stock running upon rails andby means of which wagons in motion may be slowed and stopped at pointsconvenient for loading or unloading and for being trimmed in the loadingoperations without the use of wedges, skids, or like devices inserted byhand between the wheels and rails.

In the accompanying drawings, Figure l is a longitudinal elevationshowing an example of the improved controlling apparatus, and Fig. 2 isa plan of the same.

As shown by the drawings, the improved: apparatus is designed to beoperated by hand-. levers or by hydraulic or other power appli ancesfrom any point within convenient reach of the attendant in charge of theloading operations, and it is composed of a wooden or other lever-bar a,placed longitudinally between the rails and above their level andpivoted to a cross-bar Z, carried on brackets m, secured to a long beamor beams 19, secured to the sleepers c at a point where an incline isformed to facilitate the movement of the wagons. This lever-bar CtlSslotted at its pivot end to permit of a certain length of movement inone direction against the action of a spring n, this spring normallyretaining the bar a with one end of its slot against the cross-bar Z, asshown at Fig. 1. The leverbar or brake-bar a is adapted to be raisedmore or less at its farther end, so as to bring it to or above the levelof the wagon-axles d, as shown at Fig. 1, in order that by coming intocontact with the axle or other fixture under the wagon it may serve as abrake to slow or stop the wagons running down the incline. To the upperor free end of this brake-bar a and serving as a longitudinalcontinuation of it is hinged or pivoted a bar (2, having projectingupwardly from it a number of equidistant paws or catches f. Thiscatch-bar e, which is guided by slotted links g, pivoted to it and tothe longitudinal beam 1) below, is raised or lowered vertically by meansof a toggle or other lever or, as shown, bya quadrant h and link vi,operated by a hand-leverj or by a hydraulic ram or like means withincontrol of the attendant.

In the operation of the apparatus the wagons are allowed to run down theincline until the axle d of that in front reaches the previously-raisedbrake-bar a, which slows and stops the wagons, this wagonbeing therebyraised slightly clear of the rails. The attendant then by means of thelever 7' or power mechanism lowers the catch-bar e and the brake-bar a,attached to it, to allow the axle d to pass. As the axle d slips overthe brakebar (6 the catch-bar e is again raised,so that the axle d isengaged bythe first of the series of catches, the spring or acting onthe bar a and admitting of a slight forward cushioned movement of thecatch-bar e to prevent shock upon the catches f. The loading operationis then commenced, and as it proceeds the catch-bar c is lowered atsuitable intervals to allow the wagon to move forward step bystep thedistance between the catches f, so that in loading from a screen orchute the wagon may be properly trimmed. The brake-bar a, act ing on therear axle of the wagon, prevents sudden movement and insures that thewagon will only shift from one catch f to the next in succession. Thecatches are suitably spaced to suit the trimming of the wagons inloading.

In order to permit of the operator after each stoppage lowering theraised wagon gradually I and without shock onto the rails, a brake-rim 0is provided on the quadrant h, with which a shoe 19, attached to a leverq,=is brought into contact to prevent the sudden throw over of thehand-lever, the brake-shoe being ap* plied through the intervention of alink 1, bell-crank lever s, and connecting-chain t from the catch-bar 6when the outer end of the latter is tilted by the weight of the wagonduring the lowering operation.

Instead of raising the catch-bar c and brakebar a by lever or othermechanisin'to engage the wagon-axle 61 they may be normally maintainedin the raised position by counterweights 7;, as shown, or otherwise andlowered by the leverj or other mechanism under control of the attendantto disengage the axle d and permit of the wagon moving from catch tocatch. In some cases, as when careful trimming of the wagons is notrequired, the pivoted brake-bar a may be used without attachment of thecatch-bar e and may be directly operated to control the movement of thewagons passing over it.

Having now described the invention, what we claim, and desire to secureby Letters Patcut, is-

1. Apparatus for controlling the movements of railway-wagons composed ofan inclined lever-bar or brake-bar located and pivoted between the railsand adapted to act as a brake upon the wagon-axle, and means such aslevers operated by an attendant for lowering and raising the saidbrake-bar to graduate the progressive forward movement of the wagon,substantially as described.

2. Apparatus for controlling the movements of railway-Wagons comprisingan inclined lever or brake bar located and pivoted between the. railsand a catch-bar pivoted thereto and furnished with projecting pawsadapted to engage with the axle or other fixture on the wagon and meanssuch as levers for supporting and operating said catch-bar to bring thepaws successively into engagement with the wagon-axle, substantially asdescribed.

3. Apparatus for controlling the movements of railway-wagons uponinclines comprisingin combination a lever or brake bar extendinglongitudinally between the rails and pivoted yieldingly to beams securedto the sleepers, a catch-bar provided with upwardly projecting catcheshinged to said brake-bar and pivotally guided from the beams asupporting-link centered on said bar a brake-wheel or quadrant connectedto said supporting-link and operated by hand or power andabrake-shoeadapted to automatically act upon the quadrant on the lowering of thecatch-bar, substantially as described.

In witness whereof we have hereunto set our hands in presence of twowitnesses.

JOHN DAVIE MILLER. ROBERT YATES.

\Vitnesses:

WALLACE FAIRWEATHER, JOHN ARMSTRONG, June.

